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AkIva Lipshitz
243 PointsProblem
I am trying to do this challenge- by writing the following code: NSDictionary *album = [NSDictionary dictionaryWithObjectsAndKeys:@"Abbey Road",@"title", @"TheBeatles", @"artist", nil];
It does not work. Why?
2 Answers
Dennis Walsh
5,793 PointsAklva,
I do not see an obvious problem with this code except there should be a space in "The Beatles". I tried this code (with space) and it did not work in the code challenge but compiled fine in xcode.
Derek Stepan
1,954 PointsShouldn't the key come first in the dictionary? I believe it should be
NSDictionary *album = [NSDictionary dictionaryWithObjectsAndKeys:@"title", @"Abbey Road", @"artist", @"The Beatles", nil];
The reason your previous code still compiles in Xcode is because it's valid, but instead of having a key of "title" and a value of "Abbey Road", you'd have a key of "Abbey Road" and a value of "title".
Derek Stepan
1,954 PointsLooks like my .NET is coming through. Your code is valid, mine is not.
AkIva Lipshitz
243 PointsThis is what the documentation for Xcode writes:
NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:
@"value1", @"key1", @"value2", @"key2", nil];
So the above answer fits the description. I even tested it in Xcode and got correct results after an NSLog of the dictionary:
2014-05-15 06:31:39.138 Constants[35930:303] {
Abbey Road" = title;
The Beatles" = artist;
}
Program ended with exit code:0
Unless I am reading the above text wrong, I believe the order of the keys - value pairs is not incorrect. Do you have an idea of what might be wrong. Maybe teamTreehouse does not import the entire NSDictionary.h file?